So if I’m told I have an A type personality and am also often called an A hole does that mean I can concatenate both to create the compound condition of having type holes?
It’s a negotiation! Don’t run away, use it to build negotiation muscle even if you don’t progress with it.
If they were just willing to give you 1/3 without negotiating I’d bet they would act the same the negotiating with VCs or customers and the biz would be a disaster!
Use the opportunity to level up and not think like an employee expecting everything to be handed to you on a plate.
I agree with the advice to agree all the parameters of how things will work including who leads and how things get done in all areas. Equity % is just one parameter in a multi variate equation.